Protector mechanism for looms



May 6 1924. 1,492,772

J. F. BENOIT PROTECTOR MECHANISM FOR LOOMS Filed Feb 7, 1923 3 Sheets-Sheet 1 Fig 1;.

doeph-FBenoiT May 6, 1924; 1,492,772

J. F. BENOIT PROTECTOR MECHANISM FOR LObMS Filed Feb. 1923 3 Sheets-Sheet 2 Joseph F. BenoiT MMIW AT Ty s,

May 6 1924. 1,492,772

. J. F. BENOIT PROTECTOR MECHANISM FOR LOOMS Filed Feb. 1923 :5 Sheets-Sheet 5 Fi .4. Fig.5-

Patented May 6, 1924.

UNITED STATES PATENT OFFICE.

JOSEPH F. IBENOIT, or SANFORD, MAINE, ASSIGNOR To surreal), MILLS, or smronn, mama, A CORPORATION or MAINE.

PROTECTOR MECHANISM FOR LOOMS.

Application filed February 7, 1923. Serial No. 617,481.

To all whom it may concern:

Be it known that I, JOSEPH F. BENOIT, a citizen of the United States, and resident of Sanford, county of York, State of Maine, have invented an Improvement in Protector Mechanism for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing rep-resenting like parts.

This invention relates to a protector mechanism for looms and particularly to a protector mechanism for a double-fabric loom having two shuttle boxes at each end of the lay and two shuttles which are thrown simultaneously across the lay.

The type of protector mechanism herein shown is that known type comprising aprotector rod carried by the lay and having a dag er extending therefrom and a frog with which the dagger co-operates to stop the loom whenever the shuttle is improperly boxed. I

One of the objects of the invention is to provide a protector mechanism of this type which has a single dagger and which is constructed so that the dagger. will remain in operative position when either or neither shuttle is improperly boxed but will be thrown into inoperative position when both,

shuttles are boxed.

The features wherein my invention resides will be more fully hereinafter set forth and then pointed out in the appended claims.

In the drawings wherein I have illustrateda selected embodiment of my invention, Fig. 1 is a fragmentary sectional view of the front part of the loom embodying my invention and showing the lay in elevation;

Fig. 2 is a rear view of the shuttle boxes at one end of the lay;

Fig. 3 is a top plan view of Fig. 2;

Fig. 4 is a section on the line 44, Fig. 2 showing the position of the parts when one shuttle only is boxed; I

Fig. 5 is a view of Fig. 4 looking toward the right;

Fig. 6 shows the position of theparts when neither shuttle is boxed.

Inasmuch as the present invention relates simply to the protector mechanism Ihave not deemed it necessaryfto illustrate a complete loom but have shown at 1 a portion i of a loom frame and at 2 a lay which is carried by the usual lay sword 3. The loom herein shown is a loom adapted to weave a double-pile fabric and the lay is provided at each end with two shuttle boxes 4 and 5 situated one above the other and having a fixed relation to each other as usual in double-pile fabric looms.

Each shuttle box is adapted'to receive a shuttle 6 and both shuttles are'thrown simultaneously across the lay by means of the usual picker stick 7.

The double-pile fabric woven on the-loom is indicated at 8 and this is cut into two, fabrics by the knife 9 all asusual in doubleing the shoulder 15 with which the agger is adapted to engage. Some suitable loom- .controlli'ng mechanism is employed which is actuated to stop. the loom when the frog 13 is moved toward the right Fig. 1 all as usual in protector mechanisms of this type. Such loom-stopping mechanism may be in the form of a knock-off lever which is actuated by the frog and which knocks off the shipper rod, or may be in the form of a switch for controlling an electric motor by which the loom is operated and which is opened by the movement of the frog. The latter construction is that herein vshown and this switch is shown as comprising two contact members 16 and 17 which are normally in engagement thereby closing the cirto separate the contact 17 from the contact 16. This member 20 may be carried on the end of a control lever 21 which is shown as pivoted to the loom frame at 22 so that the switch may be opened by hand. The

member 20 is also constructed so that it will neeav'ra be shifted to separate the contacts 16 and 17 by the movement of the frog 13 to the right.

In protector mechanism of this type the dagger is normally in position to engage the frog as the lay heats up, but it is thrown out of such position by the shuttle entering the box so that if the shuttle is properly boxed the dagger becomes inoperative to actuate the frog.

In my present invention I have provided a novel means whereby the dagger 12 will be thus rendered inoperative only when both shuttles are properly boxed in the boxes 4 and 5 and will remain operative to move the frog when either shuttle is improperly boxed or when both shuttles are improperly boxed.

Each shuttle box is provided with a shuttle binder of some usual construction, said shuttle binders being indicated at 23 and 2%. These binders have the usual construction so that when there is no shuttle in the box they are in an inward position. but when the shuttle enters the box it forces them outwardly.

An operative connection between the shuttle binders 23 and 24: and the protector rod 11 is provided by which when either shuttle is boxed the protector rod will be given a partial turn which, however, is insufficient to raise the dagger above the frog, but the combined movements given to the protector rod by the boxing of both shuttles is suflicient for this purpose. Therefore, when only one shuttle is boxed the dagger, while being partially raised, will yet be insuificiently raised to clear the frog so that when the lay beats up it will engage the frog and thereby stop the loom, but if both shuttles are boxed properly then the dagger is given its complete movement suflicient to clear the frog as the lay beats up and the loom continues running.

The mechanism herein illustrated for accomplishing this comprises two bent levers 25, 26 independently pivoted to the lay at 2? and 28, said levers being provided with projections 29 adapted to engage the shuttle binders 23, 2%. These levers are acted on by springs 30 which maintain them engagement with the shuttle binders. The lower ends 35 of the levers bear on opposite ends of a. differential lever 31 which is centrally pivoted at 32 to the end of an arm 12 will' be in line with the shoulder 15 of the frog and, therefore, if neither shuttle is boxed the dagger will ngage the frog as the loom heats up as shown in Fig. 6 thereby stopping the loom.

If a shuttle 6 is in the box 4 but there is no shuttle in the other box then the lever25 will be moved into the position shown in Fig. t while the lever 26 will remain in its normal position. This movement of the lever 25 will depress one end of the differential lever 13 and since the other end of said lever bears against the lower end of the 4 lever 26 such movement of the differential lever 31 will move the lever bodily downwardly a distance equal to one-half that which the end of the differential lever has been depressed by the actuating lever 25.

This will move the arm 33 downwardly one half" the distance which it would be moved if the lever 25 directly engaged said arm and, therefore, the dagger will be partially raised as shown in Fig. 4, such movement of the'dagger being, however, insufficient to carry it above the shoulder 15. Therefore, under these conditions the dagger is still in operative position so that when the lay beats up it will engage the frog and stop the loom. The same operation occurs if the shuttle is boxed in the box 5, but not in the box 4,

although in this case it would be the lever therefore, differentiates between a movement caused by the boxing of one shuttle and that caused by the boxing of both shuttles so that n the former case the dagger will still remain in its operative position while in the latter case it will be moved into its inoperative position.

While I have herein illustrated a selected embodiment of my invention I do not wish to be limited to the constructional features shown.

I claim:

1. In a protector mechanism for double shuttle looms, the combination with a lay having two shuttle boxes, of a protector rod mounted on the lay, a dagger carried by the protector rod, a frog with which the dagger co-operates to stop the loom, means normally holdingthe dagger in operative position, an arm rigid with the protector rod, a differential lever pivoted intermediate of its ends on said arm, and two independent levers pivoted to the lay, one lever engaging one shuttle binder and the other lever engaging the other shuttle binder and both levers bearing on the differential lever but on opposite sides of its pivotal point, whereby when one shuttle only is boxed the corresponding lever will operate through the differential lever to raise the dagger partially but insutficiently to clear the frog, while when both shuttles are boxed both levers act through the difierential lever to raise the dagger clear of the frog.

2. In a protector mechanism for doubleshuttle looms, the combination with a lay having two shuttle boxes at its end, a shuttle binder for each shuttle box, a protector rod mounted on the lay, a dagger carried by the protector rod, a frog with which said dagger co-operates to stop the loom, of two separate levers pivoted to the lay, one lever being actuated by one shuttle binder and the other lever being actuated by the other shuttle binder and operative connections between the levers and the protector rod whereby the protector rod will be turned to place the dagger in inoperative position only when both levers are operated simultaneously.

3. In a protector mechanism for doubleshuttle looms, the combination with a lay having two shuttle boxes each having a shuttle binder, of a protector rod mounted on the lay, a dagger carried by said protector rod, a frog with which the dagger 00- operates to stop the loom, an arm rigid with the protector rod, a differential lever centrally pivoted on said arm, and two levers pivoted to the lay and bearing on opposite ends of the differential lever, said levers being actuated by the shuttle binders when the shuttles are boxed.

4. In a protector mechanism for doubleshuttle looms, the combination with a lay having two shuttle boxes, a protector rod mounted on the lay, a dagger carried by the protector rod, a frog with which the dagger co-operates to stop the loom, the arm 33 rigid with the protector rod, the differential lever 31 pivotally mounted on said arm and two independent spring-actuated levers 25, 26 pivoted to the lay, each bearing at one end against said differential lever and at the other end against one of the shuttle binders.

5. In a protector mechanism for double shuttle looms, the combination with a lay having two shuttle boxes thereon each hav-- ing a shuttle binder, a protector rod mounted on the lay, a dagger carried by the protector rod, a frog with which the dagger co-operates to stop the loom, an arm rigid with the protector rod, a differential lever pivoted on said arm, and means actuated by each binder when a shuttle is boxed in the corresponding box to turn the protector rod through the difierential lever, the movement given to the protector rod by each binder alone being insuflioient to clear the dagger from the frog but the movement of the protector rod which is derived from; both binders acting simultaneously being suflicient for this purpose.

In testimony whereof, I have signed my I name to, this specification.

JOSEPH F. BENOIT. 

